Need HELP with my 120SR

Hey everybody,I'm new to the hobby of RC Heli's and I'm having trouble with my 120SR. When I got my 120SR I did the Binding process as per the directions but when I try to fly it I don't seem to have full controll.The rudder,elevator and aileron are not very responsive.I am using the Spektrum DX8 transmitter so maybe there are settings that I have input.If anyone has some system set-up and function set-up settings that would help I would appreciate them.Thanks

Out of the box the 120 is set for low mechanical rates, the short swash arms. The RTF transmitter defaults to high electrical rates. Low/High is beginner mode. But a DX may default to low electrical rates and it's not very flyable in Low/Low.

See where your CH5 DR switch is setup. Whichever position is 0% is low and 100% is high. There are no valid intermediate values.